Type-writing machine



(No Model.) 2 sheetssheet 1'.

E. M. HAMILTON. TYPE WRITING MACHINE.

No. 430,771., Patented June 24, 1890.

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2-Sheets--Sheefn 2. E. M. HAMILTON. TYPE WRITING MACHINE.

Patented June 24, I89 0.

WITNESS/5S:

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By CQLW/ MATTO/NVV l UNITED STATES PATENT OFFICE.

EMERY M. HAMILTON, OF NEW YORK, N.

TYPE-WRITING `IVIACHINE.

SPECIFICATION forming part of Letters Patent N'o. 430,771, dated J'une` 24, 1890.

Application filed February l0, 1890. Serial No. 339,766. (No model.)

To all whom it may concern:

Bc it known that I, EMEEY M. HAMILTON, of the city, county, and State of New York, a citizen of the United States, have invented certain new and useful Improvements in Type-Vriting Machines, of which the following is a full, clear, and exact description, refence being had to the accompanying drawings, forming part of this specification.

My invention relates to type-writing Inachines of the class known as type-bar machines, and to a machine of that class in which the type-bar is provided With a bearing by which it'is pivotally mounted on a support that is adapted to force a face on the typebar to contact with an opposed face on the support when the type-bar is vibrated in the direction to effect printing.

Illy invention consists in the combination, with a type-bar support or bracket having an aligning face and a type-bar having a face opposed and preferably parallel to and guided by said aligning face, of a conical or tapered bearing rigidly fixed to said support or bracket, by which the type-bar is pivotally mounted on the support or bracket, whereby as the type-bar is vibrated on said bearing in the direction to effect printing the type-bar face will be automatically forced to contact with the aligning face on the support or bracket, and the type-bar will thus always vibrate on said bearing in one and the same plane when effecting printing; and my invention furthenconsists in the combination, with a series of radially-arranged type-bars, of a corresponding series of radial supports or brackets, each said support or bracket being provided with a conical or tapered bearing rigidly fixed to and by Which the typebars are severally pivotally mounted on the supports or brackets individually throughout the series, and each said support or bracket, carrying its single type-bar on said conical or tapered bearing, being individually ad` j ustable radially in the series, whereby while wear on each or any of the type-bar pivotal bearings will be automatically compensated for by the described taper of the bearings, so that the type-bars Will each always vibrate in one and the same plane When vibrated on said bearings in the direction to eifect printing, as hereinbefore stated, such wear upon the conical or tapered bearings may be cornpensated for by said radial adjustment of the support or bracket to which said bearing is fixed, so that the type carried by the type-bar Inay always strike at one and the same point.

Figure l is a plan of a circular series of radially-arran ged type-bar supports or brackets and their type-bars containing my invention, and showing two key-,levers and connected mechanism. Fig. 2 is a vertical longitudinal section of a type-Writing machine containing my invention. Fig. 3 is a plan of a type-bar and its support or` bracket dctached, containing my invention. Fig. 4 is a similar view of the same, partly in section. Fig. 5 is a side elevation of the parts shown in Figs. 3 and 4; and Fig. 6 is an end view of the support or bracket, partly in section.

The features of my present Ainvention are shown in connection with certain novel features relating to the key-levers and to the lever-actuating mechanism generally and in connection with certain novel features relating to the type-bar brackets and their arrangement in the machine; but as such features of the lever movement, key-levers, and type-bar brackets constitute no part of my present invention they are not described herein, but are reserved herefrom, and are fully set forth in other applications for Letters Patent-to Wit, Serial No. 339,771, relating to the lever movement, ne., led simultaneously herewith, and Serial No. 343,108, relating to the type-bar brackets, filed March 8, 1890, of which they are severally the subject-matter.

A is a type-bar, and B is a typebar support orbracket upon which the type-bar is mounted to vibrate by means of a pivotal bearing. The support B is provided with an aligning face h, and the type-bar A has a face o, the said faces being preferably planes, as shown, and desirably located around the pivotal'bearing, and with the face a opposed and preferably parallel to the face b, as shown.

C is a conical or tapered bearing, which is fixed rigidly upon the support or bracket B, and is preferably constituted by a pi'n or stud seated fixedly in the bracket, as shown, and having the described .conical head with the taper thereof in the direction toward the face b of the support or bracket. The type-bar A IOO means of a link I), connecting the type-bar to the usual key-lever, as illustrated in Figs. 2 and -the described fixed tapered pivotal bearing C will operate to automatically force or crowd the type-bar face a to and in contact with the aligning face ZJ on the support or bracket B, so that the type-bar in its vibraltion will be guided by the face b, and will hence always vibrate in one and the same plane when vibrated in the direction to effect printing.

The brackets B, each carrying on a conical or tapered pivot fixed rigidly thereto, as described, a type-bar, are, in further carrying out my invention, arranged radially in a circular orequivalent series in a type-writing machine, and each bracket is adapted to bev radially adjustable individually in the series,

which may be accomplished by clamping all the brackets between two annular plates E and E', held together by screws e, as shown. It is evident that by means of this arrangement, while each type-bar will always vibrate on its fiXed conical bearing in one and the same plane, any wear upon said bearing being automatically compensated for by the taper j of the bearing, as described, so far as the. forcing of the face on the type-bar to contacti with the aligning face on the bracket is concerned, such Wear on each tapered bearing may be compensated for, in the direction longitudinally of the type-bar by the radial adjustability of the bracket to which said bearing is fixed, so that the type carried by the type-bar havin g vibration always in the same plane, as set forth, may always strike at one and the same point.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

l. In a type-writing machine, the combination, with a type-bar support or bracket provided with an aligning face and a type-bar having a face which is opposed to and guided by said aligning face on said support, of a conical or tapered pivotal bearing fixed rigidly to said support, by which said type-bar is mounted to vibrate on said support or bracket, substantially as and for the purpose set forth.

2. In a type-writing machine, a vibratory type-bar havinga conical or tapered bearing,

in combination with a conical or tapered pivot lfixed rigidly to a support and an aligning `-f'ace on said support around said pivot parallel land opposed to a corresponding face on the type-bar, substantially as and for the purpose .set forth.

3. In a type-writing machine, the combination, with a series of radially-arranged typefbars, of a corresponding series of radial sup` ports or brackets, each said support or bracket' being provided with a conical or tapered bearing fixed rigidly therein, by which the typebars are severally pivotally mounted on said `supports or brackets, and said supports or brackets being adapted to be adjustable radially individually in the said series, substantially as and for the purpose set forth.

EMERY IWI.l HAMILTON.

Witnesses:

EDWARD STEPHENS, FRANK B. PREIDON. 

